Designation:D707−15StandardClassificationSystemandBasisforSpecificationforCelluloseAcetateButyrateMoldingandExtrusionCompounds(CAB)1ThisstandardisissuedunderthefixeddesignationD707;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thisclassificationsystemcoversrequirementsforplas-ticizedcelluloseacetatebutyratethermoplasticcompoundssuitableforinjectionmoldingandextrusion.Thesecompoundshaveabutyrylcontentlessthan38%andanacetylcontentlessthan15%andcancontaindyesandpigments.Thisclassifica-tionsystemdoesnotincludespecialmaterialscompoundedforspecialapplications.Cellulosicplasticmaterials,beingthermoplastic,arereprocessableandrecyclable.Thisclassifi-cationsystemallowsfortheuseofthosecellulosicmaterials,providedthatallspecificrequirementsofthisclassificationsystemaremet.1.2Thepropertiesincludedinthisclassificationsystemarethoserequiredtoidentifythecompositionscovered.OtherrequirementsnecessarytoidentifyparticularcharacteristicsimportanttospecializedapplicationsarespecifiedbyusingthesuffixesasgiveninSection5.1.3Thisclassificationsystemandsubsequentlinecallout(specification)areintendedtoprovideameansofcallingoutplasticmaterialsusedinthefabricationofenditemsorparts.Itisnotintendedfortheselectionofmaterials.Materialselectioncanbemadebythosehavingexpertiseintheplasticfieldonlyaftercarefulconsiderationofthedesignandperfor-mancerequiredofthepart,environmenttowhichitwillbeexposed,fabricationprocesstobeemployed,costsinvolved,andinherentpropertiesofthematerialotherthanthosecoveredbythisclassificationsystem.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.1.5Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodportion,Section12,ofthisclassificationsystem.Thisstandarddoesnotpurporttoadd...
